Experimental Physics and
Industrial Control System

Ah yes, LInux.

You need to have the path to the libraries in the LD_LIBRARY_PATH environment variable.  Again, this is a colon-separated list, but it’s likely that it is currently empty so you need just add this to your shell startup script in addition to the 

export LD_LIBRARY_PATH="$EPICS_BASE/lib/$EPICS_HOST_ARCH"

As a further example, here’s the salient section of the startup script on a linux machine here

EPICS_ROOT=“/usr/local/epics/R3.14.12"

EPICS_BASE="$EPICS_ROOT/base"

EPICS_EXTENSIONS="$EPICS_ROOT/extensions"

MY_EPICS_BASE="$EPICS_BASE" . "${EPICS_BASE}"/startup/Site.profile

PATH="$EPICS_BASE/bin/$EPICS_HOST_ARCH:$PATH"

export LD_LIBRARY_PATH="$EPICS_BASE/lib/$EPICS_HOST_ARCH"

export EPICS_CA_MAX_ARRAY_BYTES=9000000

On Jul 23, 2016, at 6:39 AM, Hulusi Öz <[email protected]> wrote:

I understand sir, I did like that. But when I add these path in Octave :

 (/opt/epics/extensions/lib/linux-x86_64) iand (/opt/epics/extensions/src/mca/matlab) ..

And in Octave when i type "help mcaopen" , it says the definition and usage of that command.

However, according to the your example,when I use Octave to read PV from the ioc like this 

         (pv=mcaopen('hulusiHost:ai1') , I've got this :

%%%%%%%

pv=mcaopen('hulusiHost:ai1')

error: mcaopen: /opt/epics/extensions/lib/linux-x86_64/mca.mex: failed to load: libCom.so.3.14: cannot open shared object file: No such file or directory

error: called from

%%%%%%%

In the search path of Octave these path are included.I can see them.

Thanks in advance..

Best Regards..

Hulusi

-- 
Eric Norum
[email protected]